<template>
	<view class="charts-box">
		<qiun-data-charts type="area" :canvas2d="true" :canvasId="canvasId_data" :opts="opts" :chartData="chartData" />
	</view>
</template>

<script>
	export default {
		data() {
			return {
				chartData: {},
				//您可以通过修改 config-ucharts.js 文件中下标为 ['line'] 的节点来配置全局默认参数，如都是默认参数，此处可以不传 opts 。实际应用过程中 opts 只需传入与全局默认参数中不一致的【某一个属性】即可实现同类型的图表显示不同的样式，达到页面简洁的需求。
				opts: {
					color: ["#CD00FF"],
					padding: [15, 10, 0, 15],
					enableScroll: false,
						update: true,
					legend: {
						show: false
					},
					xAxis: {
						disableGrid: true
					},
					yAxis: {
						gridType: "dash",
						dashLength: 2
					},
					extra: {
						line: {
							type: "straight",
							width: 2,
							activeType: "hollow"
						}
					}
				}
			};
		},
		props: ['dangYuanRenShuInfo'],
		mounted() {
			// this.getServerData();
		},
		watch:{
		   dangYuanRenShuInfo: {
		     handler(newValue, oldValue) {
		       if (newValue) {
		         this.dangYuanRenShuInfo = newValue
		         this.$nextTick(() => {
		           this.getServerData();
		         });
		       }
		     },
		     immediate: true,
		     deep: true
		   }
		 },
		methods: {
			getServerData() {
				//模拟从服务器获取数据时的延时
				setTimeout(() => {
					//模拟服务器返回数据，如果数据格式和标准格式不同，需自行按下面的格式拼接
					let res = {
						categories: this.dangYuanRenShuInfo.map(item => {
							return item.key + '月'
						}),
						series: [{
							name: "人数走势",
							data: this.dangYuanRenShuInfo.map(item => {
								return item.value
							}),
						}, ]
					};
					this.chartData = JSON.parse(JSON.stringify(res));
				}, 500);
			},
		}
	};
</script>

<style scoped>
	/* 请根据实际需求修改父元素尺寸，组件自动识别宽高 */
	.charts-box {
		width: 100%;
		height: 140px;
	}
</style>
